UserProviderMapper (Core XMPP Server 4.4.1 API)

All Known Implementing Classes:

AuthorizationBasedUserProviderMapper, PropertyBasedUserProviderMapper
```
public interface UserProviderMapper
```
Implementations are used to determine what UserProvider is to be used for a particular username. Note that the provided username need not reflect a pre-existing user (the instance might be used to determine in which provider a new user is to be created). Implementation must have a no-argument constructor.

Author:

Guus der Kinderen, guus@goodbytes.nl

See Also:

MappedUserProvider

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`UserProvider`	`getUserProvider(String username)`	Finds a suitable UserProvider for the user.
`Set<UserProvider>`	`getUserProviders()`	Returns all providers that are used by this instance.

- Method Detail
  - getUserProvider
```
UserProvider getUserProvider(String username)
```
    Finds a suitable UserProvider for the user. Note that the provided username need not reflect a pre-existing user (the instance might be used to determine in which provider a new user is to be created). Implementations are expected to be able to find a UserProvider for any username. If an implementation fails to do so, such a failure is assumed to be the result of a problem in implementation or configuration.
    
    Parameters:
    
    username - A user identifier (cannot be null or empty).
    
    Returns:
    
    A UserProvider for the user (never null).
  - getUserProviders
```
Set<UserProvider> getUserProviders()
```
    Returns all providers that are used by this instance. The returned collection should have a consistent, predictable iteration order.
    
    Returns:
    
    all providers (never null).